» Experiment » Calculator/Converters » Radio » Newsletter » Associations and Societies » Component Manufacturers

 Electronics Symentics A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

List of Schematics - Band-pass Active Filters

 ULTRA PURE 125KHz SINE WAVE SIGNAL SOURCE For some RFID systems operating at 125KHz, a very low distortion signal source reference is needed.  The circuit shown on this page produces a 10-volt peak-to-peak signal into a 50-ohm load, with a distortion of only 0.01%. 24db / Octave Linkwitz Riley : The type of filter (Butterworth, Linkwitz-Riley ect.) indicates the shape and roll off of the filter. The more common Butterworth has its cut off frequency at the -3db point. This point is .7071 the amplitude of the pass band. The Linkwitz-Riley has its cut off frequency at the -6db point. 29.85 MHZ Bandpass Filter Schematic: Active 2nd Order Filters: Active Bandpass Filters: Bandpass Filter (Single OpAmp) : A band pass filter passes a range of frequencies while rejecting frequencies outside the upper and lower limits of the passband. The range of frequencies to be passed is called the passband and extends from a point below the center frequency to a point above the center frequency where the output voltage falls about 70% of the output voltage at the center frequency. Bandpass Filters: Bandpass Filters: Basic Introduction to Filters : Application notes on active, passive and switched capacitor filters, document in PDF format Biquad Active Bandpass Filter Schematic: Chebyshe Volt / Butterworth Filters: Chebyshe Volt Bandpass Filter: DPPs program key parameters of bandpass filter: EDN - Design Ideas /  The three-amplifier implementation of the state-variable filter in Figure 1 provides for second-order bandpass, highpass, and lowpass responses. The strength of the circuit, however, is in the bandpass response (VOUT/VIN), in which it's easy to achieve high gain (G) and high Q. These two characteristics are important in applications in which selectivity is a key parameter in the filter.. HighQ Bandpass Filter Is Well Suited To CurrentMode Signal Processing : Electronic Design - Ideas for Design / Analog signal processing has conventionally been viewed as a voltage-dominated form of design. But voltage-mode processing can restrict the system's dynamic range. There is also a limitation on the input range of signals for linear operation. An... Inversal Notch and Bandpass Filter: L Band PHEMT LNfor GPS, Inmarsat Etc: Multiple Feedback Bandpass Filter: Multiple Feedback Bandpass Filter: Narrow Band Audio Bandpass Filter: